Grady 257 Advance engine mounting hole

Elins9iron

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Jul 8, 2025
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Age
41
Model
Advance
Does anyone have a 257 Advance/fisherman with a Yamaha 350 V8 that can tell me what mounting hole theirs is set at? Mine is on the top hole and definitely needs to be moved up, but Id rather get it close to right on the first shot.

Also, speed gauge isnt reading. Do these engines use the pilot hole in the front of the nose cone? Or something else?

Thanks,